3x=7x+2(x+6)

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Solution for 3x=7x+2(x+6) equation: 



3x=7x+2(x+6)

We move all terms to the left:

3x-(7x+2(x+6))=0



We calculate terms in parentheses: -(7x+2(x+6)), so:

7x+2(x+6)

We multiply parentheses

7x+2x+12

We add all the numbers together, and all the variables

9x+12

Back to the equation:

-(9x+12)



We get rid of parentheses

3x-9x-12=0

We add all the numbers together, and all the variables

-6x-12=0

We move all terms containing x to the left, all other terms to the right

-6x=12

x=12/-6

x=-2

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